Vista I3 "Application Firmware Problem"

Hello, I write this using the Google translator, I apologize in advance if the wording is not correct. I am a theater illuminator, which has a Jands Vista I3 Console.
A few days ago I turned it on and the following appeared on the display:

"Vista 2 Application Firmware
Version: 647
Searching for Vista 2 "

One possible solution I found on the Web was to press the red and yellow buttons before turning on the console, turning it on, and waiting for the Firmware to download automatically. But the following comes out:

"Vista2 Firmware Bootloader
Version: 2.1
Ready to download firmware "

I clarify, I never used a pc to operate the console.

After that, the screen monitor began to come out as programming sequences, but they were only repeated and nothing happened, despite having been like this for 3 or 4 hours. I did this process about 6 or 7 times without getting a result. Now what happens is that the monitor simply remains black, not even the above.
That I have to do?
Thank you Greetings from Argentina

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